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Chemistry WJEC GCSE Unit 1 > Hard Water > Flashcards

Hard Water Flashcards

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1
Q

hard water =

A

difficult to form a lather with.

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2
Q

hard water contains ions of…

A

calcium, magnesium

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3
Q

Perminant hard water is ….

A

contains dissolved calcium sulphate (SO4 ^2-)

unaffected by boiling

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4
Q

temporary hard water….

A

HCO3- removed by boiling

forms limescale

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5
Q

advantages of hard water

A

good for bones
good for teeth
tastes better
increased mineral intake

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6
Q

disadvantages

A

limescale is formed (blockspiped = flooding)

clogs kettles = reduced efficiency = increased energy bills.

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Chemistry WJEC GCSE Unit 1 (16 decks)

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